SUBARU TRIBECA 2009 1.G Service Workshop Manual

GD(H6DO)-149
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
CL:DTC P0459 EVAPORATIVE EMISSION CONTROL SYSTEM PURGE CON-
TROL VALVE CIRCUIT HIGH
1. OUTLINE OF DIAGNOSIS
Detect open or short circuit of the purge control solenoid valve.
Judge as NG when the ECM output level differs from the actual terminal level.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITIONS
4. GENERAL DRIVING CYCLE
Always perform the diagnosis after starting the engine.
5. DIAGNOSTIC METHOD
Abnormality Judgment
Judge as NG when the continuous time until completing the malfunction criteria below becomes more than
time needed for diagnosis (2.5 seconds).
Time Needed for Diagnosis: 2.5 seconds
Malfunction Indicator Light Illumination: Illuminates when malfunctions occur in 2 continuous driving cy-
cles.
(A) To canister (B) To intake manifold
Secondary Parameters Enable Conditions
Ignition switch ON
Battery voltage≥ 10.9 V
After engine starting 1 second or more
Judgment Value
Malfunction Criteria Threshold Value
Duty ratio of “ON”≥ 25%
Te r m i n a l o u t p u t v o l t a g e H i g h
EN-02197
( A )( B )

GD(H6DO)-150
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
Normality Judgment
Judge as OK and clear the NG when the malfunction criteria below are met.
6. DTC CLEAR CONDITION
•When the OK idling cycle is completed 40 times in a row
•When “Clear Memory” is performed
7. MALFUNCTION INDICATOR LIGHT CLEAR CONDITIONS
•When the OK driving cycle is completed 3 times in a row
•When “Clear Memory” is performed
8. FAIL SAFE
None
9. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)
Judgment Value
Malfunction Criteria Threshold Value
Te r m i n a l o u t p u t v o l t a g e L o w

GD(H6DO)-151
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
CM:DTC P0461 FUEL LEVEL SENSOR CIRCUIT RANGE/PERFORMANCE
1. OUTLINE OF DIAGNOSIS
Detect malfunctions of the fuel level sensor output property.
If the fuel level does not vary in a particular driving condition/engine condition where it should, judge as NG.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITIONS
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
5. DIAGNOSTIC METHOD
Abnormality Judgment
Judge as NG when the malfunction criteria below are met.
(A) Fuel level (B) Resistance
Secondary Parameters Enable Conditions
None
Judgment Value
Malfunction Criteria Threshold Value
Accumulated amount of intake air > 331 kg (729.7 lb)
Max. – min. values of fuel level output < 2.6 2 (0.69 US gal,
0.57 Imp gal)
Battery voltage≥ 10.9 V
Engine speed < 7000 rpm
After engine starting 5 seconds or more
EN-01734
0(B)
(A)

GD(H6DO)-152
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
Time Needed for Diagnosis: Undecided
Malfunction Indicator Light Illumination: Illuminates when malfunctions occur in 2 continuous driving cy-
cles.
Normality Judgment
Judge as OK and clear the NG when the malfunction criteria below are met.
6. DTC CLEAR CONDITION
•When the OK idling cycle is completed 40 times in a row
•When “Clear Memory” is performed
7. MALFUNCTION INDICATOR LIGHT CLEAR CONDITIONS
•When the OK driving cycle is completed 3 times in a row
•When “Clear Memory” is performed
8. FAIL SAFE
None
9. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)
Judgment Value
Malfunction Criteria Threshold Value
Accumulated amount of intake air > 331 kg (729.7 lb)
Max. – min. values of fuel level output≥ 2.6 2 (0.69 US gal,
0.57 Imp gal)
Battery voltage≥ 10.9 V
Engine speed < 7000 rpm
After engine starting 5 seconds or more

GD(H6DO)-153
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
CN:DTC P0462 FUEL LEVEL SENSOR CIRCUIT LOW INPUT
1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of fuel level sensor. Judge as NG if it is out of specification.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITIONS
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
5. DIAGNOSTIC METHOD
Abnormality Judgment
Judge as NG when the continuous time until completing the malfunction criteria below becomes more than
time needed for diagnosis (2.5 seconds).
Time Needed for Diagnosis: 2.5 seconds
Malfunction Indicator Light Illumination: Illuminates when malfunctions occur in 2 continuous driving cy-
cles.
(1) Engine control module (ECM) (3) Fuel sub level sensor (4) Detecting circuit
(2) Fuel level sensor
Secondary Parameters Enable Conditions
None
Judgment Value
Malfunction Criteria Threshold Value
Ignition switch ON
Battery voltage≥ 10.9 V
After engine starting 3 seconds or more
Output voltage < 0.173 V
EN-01735
(4)
(1)
(2) (3)

GD(H6DO)-154
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
Normality Judgment
Judge as OK and clear the NG when the malfunction criteria below are met.
6. DTC CLEAR CONDITION
•When the OK idling cycle is completed 40 times in a row
•When “Clear Memory” is performed
7. MALFUNCTION INDICATOR LIGHT CLEAR CONDITIONS
•When the OK driving cycle is completed 3 times in a row
•When “Clear Memory” is performed
8. FAIL SAFE
None
9. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)
Judgment Value
Malfunction Criteria Threshold Value
Ignition switch ON
Battery voltage≥ 10.9 V
After engine starting 3 seconds or more
Output voltage≥ 0.173 V

GD(H6DO)-155
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
CO:DTC P0463 FUEL LEVEL SENSOR CIRCUIT HIGH INPUT
1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of fuel level sensor. Judge as NG if it is out of specification.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITIONS
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
5. DIAGNOSTIC METHOD
Abnormality Judgment
Judge as NG when the continuous time of completing the malfunction criteria below exceeds the time re-
quired for diagnosis (1 second).
Time Needed for Diagnosis: 1 second
Malfunction Indicator Light Illumination: Illuminates when malfunctions occur in 2 continuous driving cy-
cles.
(1) Engine control module (ECM) (3) Fuel sub level sensor (4) Detecting circuit
(2) Fuel level sensor
Secondary Parameters Enable Conditions
None
Judgment Value
Malfunction Criteria Threshold Value
Ignition switch ON
Battery voltage≥ 10.9 V
After engine starting 3 seconds or more
Output voltage≥ 7.212 V
EN-01735
(4)
(1)
(2) (3)

GD(H6DO)-156
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
Normality Judgment
Judge as OK and clear the NG when the malfunction criteria below are met.
6. DTC CLEAR CONDITION
•When the OK idling cycle is completed 40 times in a row
•When “Clear Memory” is performed
7. MALFUNCTION INDICATOR LIGHT CLEAR CONDITIONS
•When the OK driving cycle is completed 3 times in a row
•When “Clear Memory” is performed
8. FAIL SAFE
None
9. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)
Judgment Value
Malfunction Criteria Threshold Value
Ignition switch ON
Battery voltage≥ 10.9 V
After engine starting 3 seconds or more
Output voltage < 7.212 V

GD(H6DO)-157
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
CP:DTC P0464 FUEL LEVEL SENSOR CIRCUIT INTERMITTENT
1. OUTLINE OF DIAGNOSIS
Detect the unstable output faults from the fuel level sensor caused by noise. Judge as NG when the max. val-
ue and cumulative value of output voltage variation of the fuel level sensor is larger than the threshold value.
2. ENABLE CONDITIONS
3. GENERAL DRIVING CYCLE
•Always perform the diagnosis continuously at idle speed.
•Pay attention to the fuel level.
Malfunction Criteria Threshold Value
Engine speed≥ 500 rpm
After engine starting 1 second or more
Ignition switch ON
Battery voltage > 10.9 V
Idle switch ON
Fuel level 9.6 ←→ 54.4 2 (2.54
←→ 14.37 US gal,
2.11 ←→ 11.97 Imp
gal)
Ve h i c l e s p e e d = 0 k m / h ( 0 M P H ) 1 0 s e c o n d s o r m o r e

GD(H6DO)-158
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
4. DIAGNOSTIC METHOD
Calculate the Max. value (delflmax) and cumulative value (sumfl) of output voltage variation of fuel level sen-
sor during 12.2 seconds. Judge it normal when both max. and cumulative values are not over the threshold
value. Otherwise, when either of them is over the threshold value, the diagnosis counter counts up. Judge as
NG if the counter indicated 4 counts.
Abnormality Judgment
Judge as NG when the malfunction criteria below are met.
Judgment Value
Malfunction Criteria Threshold Value
Integrated times of the condition reaching
follows,
≥ 4 times
DELFLMAX 0.27 ←→ 0.894 V or SUMFL
≥ 25.92 V

At that time, DELFLMAX: Maximum differ-
ence of sensor output for 12.2 seconds;
SUMFL: Integrated value of the sensor
output deviation for 12.2 seconds

Diagnosis condition
Diagnosis timer
12.2 S
Fuel level sensorA/D value
Malfunction
Normal
Amount of Fuel leveloutput voltage variation
Diagnosis counter
NG at 4 counts
Calculate the Max. value (delvflmx) and the cumulative value (sumvfl).
123456
0
EN-03229